WorldCast is a free two-in-one tool: A free bulk email software and also an e-mail address validator. It detects many of the common invalid addresses that exists on almost any emailing list, reporting bad email addresses, time-out operations, etc.

Visit official page of Kernel for EML to PST software to download EML to PST Converter for free. The software also has got its own trial version. It lets you migrate EML/EMLX files to MS Outlook and offers their preview before saving in PST format.